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line follower circuit

Discussion in 'Robotics & Mechatronics' started by goutam, May 29, 2010.

  1. goutam

    goutam New Member

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    I need a line follower circuit, it should not contain any microcontroller.
    please help!
     
  2. Grossel

    Grossel Member

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    Search for "Schmitt trigger" on the net. It's probably what you're looking for
     
  3. goutam

    goutam New Member

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    can you give me something more specific, like a diagram or something.
     
  4. dave

    Dave New Member

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  5. Grossel

    Grossel Member

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    A schmitt trigger will (if correct set up) supress noise in a digital signal.

    A schmitt-trigger can either be bought as a regular IC (7414) or constructed as an simple opamp circuit (read on Wikipedia)
     
  6. 3v0

    3v0 Coop Build Coordinator Forum Supporter

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    Do you want a line follower for a digital signal or a circuit that will make a robot follow a line ?
     
    Last edited: May 31, 2010
  7. amando96

    amando96 Guest

    Last edited by a moderator: May 31, 2010
    • Like Like x 1
  8. goutam

    goutam New Member

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    i need a circuit that will make a robot follow a line
     
  9. Norlin

    Norlin New Member

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  10. Triode

    Triode Member

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    If I ever teach a robotics class, I'm definitely not giving them a line follower as a project. It's gotten to the point where if you type "line follower robot" or "line follower schematic" or any such thing into Google you get 500 plans for line following robots, complete with diagrams. Speaking of which, OP, Google it and you'll find complete schematics galore. Actually norlin just said that, and he suggested the same book that I was going to. So I'll just second that, I've read it, it's an extremely complete book, it gives you everything from the circuit diagrams to tips on soldering and joining wires and building the frame, to suggested suppliers for the parts.
     
    Last edited: Jun 1, 2010
  11. goutam

    goutam New Member

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    I have tried the following circuit, but my ics are getting burnt every time I try to use it. I have nearly burnt 10 ics.
    Please assist.
     

    Attached Files:

  12. akstiw1

    akstiw1 New Member

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    I it would be better if u use a microcontroller (even a 20 pin one would be helpful)
     
  13. goutam

    goutam New Member

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    my teacher specified no micro controller
     
  14. Triode

    Triode Member

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    Did he specify to use no prepackaged IC's because a comparator chip and a motor driver chip could make this a very simple project.
     
  15. Transistorman

    Transistorman Member

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    you can use a Logic Gate LFR
    [​IMG]
     
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  16. akstiw1

    akstiw1 New Member

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    i think transistorian gave u the correst circuit ,test it on a simulation software if u hav one,if u don't don't panic it is very cheap.
     
  17. goutam

    goutam New Member

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    thanks transistorian
     
  18. Transistorman

    Transistorman Member

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    you welcome
     
  19. ANTlabs

    ANTlabs New Member

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    Where is the C of both Phototransistors go?
     
  20. Norlin

    Norlin New Member

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    Looks to me that it connects to the other lead of each motor (ie, the one that's not connected to + on the battery)
     
  21. ANTlabs

    ANTlabs New Member

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    yeah, but how are they powered then?
     

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